The Design and the Process Technology of a Rotational Mold

Alina Bianca Pop,Mihail Aurel Țîțu,Gheorghe Ioan Pop,N Balc,D Leordean

doi:10.1051/matecconf/201929903004

Alina Bianca Pop, Mihail Aurel Țîțu + Show 3 more

Open Access

https://doi.org/10.1051/matecconf/201929903004

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Abstract

The present paper highlights a series of introduction aspects of the rotational system for slush plastic casting, which are the characteristic elements of this fabrication technology and which consistsof the rotational molding. Also, the structure of a rotational mold and the methods used to obtain themold, are presented. The purpose of this research is to describe the parametric design of a rotationalmold and its fabrication process. The research method used to accomplish this purpose consist of the CAD – Modelling specific software utilized to carry out the parametric design of the rotational mold. After the parametric design it was adopted the manufacturing technology of the mold, using a CAMspecific software. In the final part of the research a few important conclusions were drawn from the bibliographical study and from personal convictions.

Highlights

The molding is the process of hot or cold plastic deformation where the material is required to take the form and dimensions of the cavity provided in the tool according to the configuration of the parts to be executed
The rotational molding process allows the obtaining of parts without core by plastic materials
Computer-aided machining (CAM) is a tool that allows the use of 3D models based on computer aided design (CAD)

Summary

Introduction

The molding is the process of hot or cold plastic deformation where the material is required to take the form and dimensions of the cavity provided in the tool according to the configuration of the parts to be executed. The high degree of automation of machines and the ever-increasing range of raw materials available allows the rotary molding process to address the most diverse applications; from small ones, such as plastisol syringes, to 87.720 liters of polyethylene containers [5]. The raw material used in rotational molding consists of crystalline thermoplastic materials such as: polyethylene, polypropylene, nylon, polyethylene terephthalate, vinyl polychloride, polycarbonates - which are amorphous thermoplastic materials or polyurethanes - which are thermosetting. The most important process for pieces manufacture of plastic materials is: the blow forming process; the rotational molding; the injection process; the calendar process; the extrusion process; the thermoforming; the reduction (compression) process; the expansion process

The rotational molding technology for parts without core

The parametric design of a rotational mold using the CAD application CATIA V5

The mold manufacturing simulation process using the POWERMILL CAM application

Optimization of the cutting regime with POWERMILL-CAM application

Conclusions